Which of the following statements concerning the first law of thermodynamics is/are true? select all of the correct answers. internal energy lost by a system is always gained by the surroundings. the universe is an isolated system. the internal energy of the universe is always increasing.

The universe is an isolated system, energy lost is equal to energy gained according to the first law of thermodynamics.

According to the first law of thermodynamics, energy is neither created nor destroyed but is converted from one form to another. This is demonstrated by the equation; E = q + w

E = internal energy of the system

q = heat gained/lost by the system

w = work done on/by the system

The following statements are true based on the first law of thermodynamics;

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Internal energy lost by a system is always gained by the surroundings

The universe is an isolated system

According to the first law of thermodynamics:

Then this law relates the work and the transferred heat exchanged in a system through the internal energy, which is neither created nor destroyed, it is only transformed.

In other words: The change in the internal energy of a system is equal to the net heat that is transferred to it plus the net work done on it.

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there are no contact forces mentioned on the list of choices that you've provided.